An even larger contraption made by complicated networks of symbiotic and parasitic components. The automatic mechanism of madness chugs along, gears screaching under the pressure of it's own immense weight. The immense implosion of gravity in on it's self around the machine creates heat and friction in the internal components untill one of them breaks and the machine comes crashing down.
When the machine shuts down, the illusion generators and subliminal brain washing centers will be exposed and vulnerable to a sudden free will of the people to survive. They will strike at the heart of the machine in one last death gasp of freedom.
Then their history will be rewritten by the scavengers of future eons but maybe, just maybe some of the ancient instincts of free will and free thought will be ingrained into the DNA of the post human terrestrials who replace us like we replaced neanderthal.